Java – how to initialize a servlet when the server starts

I wrote a simple servlet with init () and doget (), dopost () methods I have a request, I have an API, I need to call the server to start

Is it possible to do so I try to use the init method and use it on the web XML, but I still can't

Please tell me if I missed anything

thank you

Solution

Do you set the load on startup property to a positive value?

<servlet id=”servlet1”>
<load-on-startup>2</load-on-startup>
</servlet>

Alternatively, you may want to use servletcontextlistener for initialization when the container starts This is a "de facto" standard for callback to perform some initialization when the servlet container is online. For example, we use it to read some XML files and fill the cache